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105
U14 (Conveyor Jam3:
Paper did not reach the
Jam Sensor.)
Paper did not reach the
Jam Sensor.)
14
00
00
00 1. Document remains between
Starting Sensor and Jam Sensor.
Remove the document from the scanner.
2. Paper dust exists on or around
the Jam Sensor.
the Jam Sensor.
1. Clean up the dirt with cleaning paper or
cotton swab or soft and dry cloth.
(See Sec. 9.)
(See Sec. 9.)
2. Execute “Key/Sensor” tests in Sec. 10.3.7.
and “Sensor sensitive level” in Sec.
10.3.8. to check the Jam Sensor condition.
10.3.8. to check the Jam Sensor condition.
3. Jam Sensor does not work,
correctly
1. Execute “Key/Sensor” test in the Sec.
10.3.7. to check the sensor condition.
2. Check the mounting of the lens of the Jam
Sensor.
3. Check the following connection and
soldering condition on each connector.
CN5190 (JAM SENSOR Board) to
CN20 (CONTROL Board)
CN5190 (JAM SENSOR Board) to
CN20 (CONTROL Board)
4. Check the following signals.
a. Jam Sensor signal CN20-7th pin:
Approx. 5 V (no paper on the sensor)
b. Check the reference signal for the Jam
Sensor signal on the CONTROL Board.
IC42-5th pin: Approx. 2.5 V
c. Check comparator output signal.
IC42-7th pin: 5 V (no paper on the sensor)
Approx. 5 V (no paper on the sensor)
b. Check the reference signal for the Jam
Sensor signal on the CONTROL Board.
IC42-5th pin: Approx. 2.5 V
c. Check comparator output signal.
IC42-7th pin: 5 V (no paper on the sensor)
5. Replace faulty parts or cables.
4. Mechanical problem (Drive
Rollers, Drive Belt, Conveyor)
Rollers, Drive Belt, Conveyor)
1. Check the arrangement and on/off status of
the Jam Sensor.
2. Execute “Conveyor motor” test in Sec.
10.3.7. to check the mechanical condition.
3. Check whether the Drive Rollers (2 to 4),
Drive Belt, and the conveyor to support the
Drive Rollers (2 to 4) are put together into
the scanner, properly.
Drive Rollers (2 to 4) are put together into
the scanner, properly.
4. Check the surfaces of the Drive Rollers
(2 to 4).
a. If it is deformed
a. If it is deformed
Replace the roller.
b. If the surface is dirty
Clean the surface.
5. Check whether the Drive Belt tension is
proper.
Re-adjust the belt tension.
Re-adjust the belt tension.
U15 (Conveyor Jam4:
Paper did not reach the
Exit Sensor.
Paper did not reach the
Exit Sensor.
15
00
00
00 1. Document remains between
Jam Sensor and Exit Sensor.
Remove the document from the scanner.
2. Paper dust exists on or around
the Exit Sensor.
1. Clean up the dirt with cleaning paper or
cotton swab or soft and dry cloth.
(See Sec. 9.)
(See Sec. 9.)
2. Execute “Key/Sensor” tests in Sec. 10.3.7.
and “Sensor sensitive level” in Sec.
10.3.8. to check the Exit Sensor condition.
10.3.8. to check the Exit Sensor condition.
3. Exit Sensor does not work,
correctly
1. Execute “Key/Sensor” test in the Sec.
10.3.7. to check the Sensor condition.
2. Check the mounting of the lens of the Exit
Sensor.
3. Check the following connection and
soldering condition on each connector.
CN5060 (EXIT SENSOR Board) to
CN22 (CONTROL Board)
CN5060 (EXIT SENSOR Board) to
CN22 (CONTROL Board)
4. Check the following signals.
a. Exit Sensor signal CN22-1st pin:
Approx. 5 V (no paper on the sensor)
b. Check the reference signal for the Exit
Sensor signal on the CONTROL Board.
IC42-3rd pin: Approx. 2.5 V
c. Check comparator output signal.
IC42-1st pin: 5 V (no paper on the sensor)
Approx. 5 V (no paper on the sensor)
b. Check the reference signal for the Exit
Sensor signal on the CONTROL Board.
IC42-3rd pin: Approx. 2.5 V
c. Check comparator output signal.
IC42-1st pin: 5 V (no paper on the sensor)
5. Replace faulty parts or cables.
Error Code
ST1 ST2 ST3 ST4
Possible Cause
Recommended action
Remarks
106
4. Mechanical problem
(Drive Rollers, Drive Belt,
Conveyor)
Conveyor)
1. Execute “Conveyor motor” test in
Sec.10.3.7. to check the mechanical
condition.
condition.
2. Check whether the Drive Rollers (5, 6), Drive
Belt, and the conveyor to support the Drive
Rollers are put together into the scanner,
properly.
Rollers are put together into the scanner,
properly.
3. Check the surfaces of the Drive Rollers
(5, 6).
a. If it is deformed
a. If it is deformed
Replace the roller.
b. If the surface is dirty
Clean the surface.
4. Check whether the Drive Belt tension is
proper
Re-adjust the belt tension.
Re-adjust the belt tension.
U16 (Exit Jam1: Paper
did not pass through
the Exit Sensor)
did not pass through
the Exit Sensor)
16
00
00
00 1. Document remains on
Exit Sensor.
Remove the document from the scanner.
2. Paper dust exists on or around
the Exit Sensor.
1. Clean up the dirt with cleaning paper or
cotton swab or soft and dry cloth.
(See Sec. 9.)
(See Sec. 9.)
2. Execute “Key/Sensor” test in Sec.10.3.7.
and “Sensor sensitive level” in Sec.
10.3.8. to check the Exit Sensor condition.
10.3.8. to check the Exit Sensor condition.
3. Mechanical problem (Exit Roller,
Drive Belt, Conveyor)
Drive Belt, Conveyor)
1. Execute Conveyor motor test in Sec.
10.3.7. to check the mechanical condition.
2. Check whether the Drive Roller 6, Exit
Roller, Drive Belt, and the conveyor to
support the rollers are put together into the
scanner, properly.
3. Check the surfaces of the Drive Roller 6 and
Roller, Drive Belt, and the conveyor to
support the rollers are put together into the
scanner, properly.
3. Check the surfaces of the Drive Roller 6 and
the Exit Roller.
a. If it is deformed
Replace the roller.
b. If the surface is dirty
Clean the surface.
4. Check whether the Drive Belt tension is
proper.
proper.
Re-adjust the belt tension.
U18 (Paper remains in
the scanner)
the scanner)
18
xx
xx
00 1. Document remains in scanner.
Remove the document from the scanner.
2. Paper dust exists on a sensor.
1. Execute “Key/Sensor” test in Sec. 10.3.7.
and “Sensor sensitive level” tests in the
Sec. 10.3.8. to define the sensor that results
in this problem.
Sec. 10.3.8. to define the sensor that results
in this problem.
2. Clean up the dirt with cleaning paper or
cotton swab or soft and dry cloth.
(See Sec. 9.)
(See Sec. 9.)
18
01
00
00 3. Skew sensor right does not work
correctly
Clean up the dirt on the surface of the sensor
and reflection lens. (See Sec. 9.)
1. Check the following connection and
and reflection lens. (See Sec. 9.)
1. Check the following connection and
soldering condition on each connector.
a. CN3900 (SKEW DETECT SENSOR(R)
Board) to CN3303 (LOWER RELAY
Board).
b. CN3304 (LOWER RELAY Board) to CN18
(CONTROL Board).
a. CN3900 (SKEW DETECT SENSOR(R)
Board) to CN3303 (LOWER RELAY
Board).
b. CN3304 (LOWER RELAY Board) to CN18
(CONTROL Board).
2. Check the soldering condition of D3900,
Q3902,D3901,Q3903, and their surrounding
circuit on the SKEW DETECT SENSOR(R)
Board.
circuit on the SKEW DETECT SENSOR(R)
Board.
3. Check the soldering condition of IC32,IC35,
IC36,IC37,IC38, and their surrounding circuit
on the CONTROL Board.
on the CONTROL Board.
4. Check the soldering condition of IC1 and
their surrounding circuit.
5. Replace faulty parts or related Board.
Error Code
ST1 ST2 ST3 ST4
Possible Cause
Recommended action
Remarks
107
18
02
00
00 4. Skew sensor left does not work
correctly
Clean up the dirt on the surface of the sensor
and reflection lens. (See Sec. 9.)
1. Check the following connection and
and reflection lens. (See Sec. 9.)
1. Check the following connection and
soldering condition on each connector.
a. CN3800 (SKEW DETECT SENSOR(L)
Board) to CN3302 (LOWER RELAY
Board).
b. CN3304 (LOWER RELAY Board) to CN18
(CONTROL Board).
a. CN3800 (SKEW DETECT SENSOR(L)
Board) to CN3302 (LOWER RELAY
Board).
b. CN3304 (LOWER RELAY Board) to CN18
(CONTROL Board).
2. Check the soldering condition of D3800,
Q3802,D3801,Q3803, and their surrounding
circuit on the SKEW DETECT SENSOR(L)
Board.
circuit on the SKEW DETECT SENSOR(L)
Board.
3. Check the soldering condition of IC32,IC35,
IC36,IC37,IC38, and their surrounding circuit
on the CONTROL Board.
on the CONTROL Board.
4. Check the soldering condition of IC1 and
their surrounding circuit.
5. Replace faulty parts or related Board.
18
08
00
00 5. Exit Sensor does not work
correctly.
Clean up the dirt on the surface of the sensor
and reflection lens.
Refer to the 3rd item on Error Code U16.
and reflection lens.
Refer to the 3rd item on Error Code U16.
18
10
00
00 6. Slip Detect Sensor does not
work correctly.
Clean up the dirt on the surface of the sensor
and reflection lens.
Refer to the 3rd item on Error Code U12.
and reflection lens.
Refer to the 3rd item on Error Code U12.
18
18
04
00 7. Jam Sensor does not work
correctly.
Clean up the dirt on the surface of the sensor
and reflection lens.
Refer to the 3rd item on Error Code U14.
and reflection lens.
Refer to the 3rd item on Error Code U14.
18
20
00
00 8. Starting Sensor does not work
correctly.
Clean up the dirt on the surface of the sensor
and reflection lens.
Refer to the 3rd item on Error Code U13.
and reflection lens.
Refer to the 3rd item on Error Code U13.
18
40
00
00 9. Waiting Sensor does not work
correctly.
Clean up the dirt on the surface of the sensor
and reflection lens.
Refer to the 3rd item on Error Code U11.
and reflection lens.
Refer to the 3rd item on Error Code U11.
U19
(Jam sound detection)
(Jam sound detection)
1A
00
00
00 Jam sound is detected by
microphones.
Remove the document from the scanner.
The microphones do not work
correctly.
correctly.
See Sec. 7.10. Jam sound detect function.
U23
(Double-feed error)
(Double-feed error)
1C
00
xx
00 1. Document quality is out of spec.
on this scanner.
1. Set the correct documents on the Feed Tray
according to this scanner specification.
2. Rollers (Paper Feed,
Separation, DFP) are not
assembled, properly.
Separation, DFP) are not
assembled, properly.
1. Reassemble the rollers.
3. Rollers (Paper Feed,
Separation, DFP) are dirty.
Separation, DFP) are dirty.
1. Clean the rollers.
2. Clear counter for cleaning roller to zero with
the above service utility.
2. Clear counter for cleaning roller to zero with
the above service utility.
4. Rollers have reached their life
expectancy.
expectancy.
1. Replace the Paper Feed, Separation,
and DFP Rollers after checking each
roller configuration and Scanner Counter
of Service Utility software.
2. Clear counter for replacing roller to zero with
the above service utility.
and DFP Rollers after checking each
roller configuration and Scanner Counter
of Service Utility software.
2. Clear counter for replacing roller to zero with
the above service utility.
Error Code
ST1 ST2 ST3 ST4
Possible Cause
Recommended action
Remarks
108
5. Double Feed Detector (G) does
not work, properly.
not work, properly.
1. Execute “Double feed” in Sec. 10.3.8. to
adjust “Send Level” for Double Feed
Detectors.
Detectors.
2. Execute “Double feed” test in the Sec.
10.3.7. to check the detector condition.
3. Check the following aligned property of the
Double feed Detection sensor.
a. SN3750,SN3751,SN3752 (USS(R)/WAIT
SENSOR Board)
b. SN5210,SN5211 (USS(L) Board)
a. SN3750,SN3751,SN3752 (USS(R)/WAIT
SENSOR Board)
b. SN5210,SN5211 (USS(L) Board)
4. Check the following connection and
soldering condition on each connector.
a. CN3750 (USS(R)/WAIT SENSOR Board)
to CN3005 (UPPER RELAY Board)
b. CN5210 (USS(L) Board) to CN3006
(UPPER RELAY Board)
c. CN3004 (UPPER RELAY Board) to CN19
(CONTROL Board)
a. CN3750 (USS(R)/WAIT SENSOR Board)
to CN3005 (UPPER RELAY Board)
b. CN5210 (USS(L) Board) to CN3006
(UPPER RELAY Board)
c. CN3004 (UPPER RELAY Board) to CN19
(CONTROL Board)
5. Check the following parts' soldering condition
to repair it.
a. UPPER RELAY Board
IC3005-6,7,8,9, and 12th pins)
b. UPPER RELAY Board
Q3006 to Q3050 and surrounding circuit.
a. UPPER RELAY Board
IC3005-6,7,8,9, and 12th pins)
b. UPPER RELAY Board
Q3006 to Q3050 and surrounding circuit.
6. Check the following signal of UPPER RELAY
Board.
a. CN3004-1 and 2nd pin: 24 V
b. CN3004-9,11,12,13, 14th pin (JS_CLK) :
300 kHz
c. CN3006-1, 3rd pin (USS+),
CN3006-2, 4th pin (USS-),
CN3005-1, 3, 5th pin (USS+),
CN3005-2, 4, 6th pin (USS-) :
Approx. 300 kHz Sine wave
a. CN3004-1 and 2nd pin: 24 V
b. CN3004-9,11,12,13, 14th pin (JS_CLK) :
300 kHz
c. CN3006-1, 3rd pin (USS+),
CN3006-2, 4th pin (USS-),
CN3005-1, 3, 5th pin (USS+),
CN3005-2, 4, 6th pin (USS-) :
Approx. 300 kHz Sine wave
7. Replace faulty parts or boards.
6. Double Feed Detector (R) does
not work, properly.
not work, properly.
1. Execute Double feed test in Sec.10.3.7. to
check the detector condition.
2. Check the aligned property of the Double
feed Detection sensor.
3. Check the following connection and
soldering condition on each connector.
a. CN3900 (SKEW DETECT SENSOR(R)
Board) to CN3303 (LOWER RELAY
Board)
b. CN3800 (SKEW DETECT SENSOR(R)
Board) to CN3302 (LOWER RELAY
Board)
c. CN3304 (LOWER RELAY Board) to CN18
(CONTROL Board)
a. CN3900 (SKEW DETECT SENSOR(R)
Board) to CN3303 (LOWER RELAY
Board)
b. CN3800 (SKEW DETECT SENSOR(R)
Board) to CN3302 (LOWER RELAY
Board)
c. CN3304 (LOWER RELAY Board) to CN18
(CONTROL Board)
4. Check the following parts' soldering condition
to repair it.
All mounting parts of LOWER RELAY Board
All mounting parts of LOWER RELAY Board
5. Check the following signal of LOWER
RELAY Board.
a. CN3304-1 and 2nd pin: 12 V
b. CN3304-4th pin: 5 V
a. CN3304-1 and 2nd pin: 12 V
b. CN3304-4th pin: 5 V
6. Replace faulty parts or boards.
U25 (Detect document
with staples (Double-
feed detection))
with staples (Double-
feed detection))
1E
00
00
00 1. Refer to each item of Error Code U23.
U26 (Bent Paper was
detected.)
detected.)
1F
xx
00
00 1. Bent Paper was detected.
1. Check whether the scanned documents are
stapled
2. Set the documents neatly on the Feed Tray,
and then scan them again.
Error Code
ST1 ST2 ST3 ST4
Possible Cause
Recommended action
Remarks
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